Mounting fob artificial teeth



Sept. 6, 1932. w. F. RODIN MOUNTING FOR ARTIFICIAL TEETH Filed Doc. 1, 1950 2 Sheets-Sheet 1 INVENTOR. W/LL/AM E 00m v A TTORNE YS.

Sept. 6, 1932. w. F. RODIN 1,875,499

MOUNTING FOR ARTIFICIAL TEETH Filed Dec. 1, 1930 2 Sheets-Sheet 2 INVENTOR. A

MAL/AM E flow/v mM-A/ V@ A TTORNE YS.

Patented Sept. 6, 1932 -WILLIAM nonrmor L s' 'ANGELR, CALIFORNIA moon'rmeron ARTrn-IGIAL 'rnn'rnc Application filed December My invention relates to mountings for artificial teeth as used in plate and bridge work, and it is a purpose of my invention to provide a mounting of simple and rugged'conr; struction by which an artificial tooth can be U fixedly secured in position on a plate or bridge in such manner as to produce a tooth having the requisite strength and rigidity to withstand without fracture or displacement, the stresses to which the tooth is subjected in use.

It is a further purpose of my invention to provide a mounting capable of being as sociated with an artificial tooth of the character wherein a metallic backing forms the lingual side of the tooth, or wherein the tooth has porcelain incisal and occlusal portions.

I will describe only two forms of mounting for artificial teeth embodying my invention, and will then point out the novel fea tures thereof in the claim.

In the accompanying drawings:

Figure 1 is a view showing in vertical central section one form of mounting embodying my invention, with an artificial tooth in applied position.

Figures 2 and 3 are sectional views taken respectively on the lines 2-2 and 33 of.

Figure 1 and looking in the direction of the respective arrows.

Figure 4 is a perspective view of a back ing and head embodiedin the mounting.

Figure 5 is a view similar to Figure 1 and showing in vertical central section another form of mounting embodying my invention. Figure 6 is a View in elevation of the artificial tooth associated with the mounting shown in Figure 5 andlooking at the lingual side of the tooth.

Figure 7 is a horizontal sectional view taken on the line 7-7 of Figure 5 and looking in the direction of the arrows, and

Figure 8 is a perspective view of a backing and head embodied in the mounting shown in Figures 5, 6, and 7.

Referring specifically to the drawings and particularly to Figures 1 to 4 inclusive, my invention comprises a metallic head or dowel H which in the embodiment shown in these figures, is formed integral with a backing B 1, 1530.". seal in. 9392 I p in the shape of a flat plate of metal," original size of which islarger than that of the lingual surface of a tooth to 'which' the backingis intended to be applied.

The Head H projects from one side of the backing'B and is substantiallyof U-s'hapeto provide two parallel spaced apart walls 11 and 12 projectingat' a right angle from the side of the backing and connected at one'extremity by a curved wall or bight 13. The

end edges 14 of the walls 11 and 12 extend from the backing B at an acute angle as shown in. Figure 1; and it will be noted that the thickness of the wall 13 along the longitudinal or vertical axis A (Figure 2) of the head,

is disposed parallel to the end edges 14, all to the end that when the backing is applied to an artificial tooth 15 as shown in Figure l, the head 'H will incline towards the incisal edge in incisorsand towards the buccal cusp in molars .and bicuspids. i The tooth 15 is provided with a socket S extending inwardly of the tooth from its lingual side 16 towards its buccal side17 and inclined towards the incisal edge in incisors and towards the buccal cusp in molarsand bicuspids. The socket'S is complementary in shape to the head H so as to provide in the tooth, a vertically'disposed tongue 18 which in the applied position of the tooth to the backing, enters the correspondingly shaped pocket 19 in the head formed by the co-action of the backing with the sidewalls 11 and 12 and the bight 13 of the head;

'In practice the backing B is secured to a plate or bridge in the usual manner, and a quantity of cement is supplied to the socket S and the flat lingual side 16 of the tooth, immediately after which the tooth isforced onto the head H until the latter seats in the socket and the lingual side'16 tightly abuts thebacking all asshown'in Figure l. lfVhen'the cement has set, thc tooth wiil be fixedly supported on the backing; and due to the inclination of the head and socket,"any pressure exerted upon the tooth as inlbiting," will tend to'jam the tooth further onto the head H. Due tothe forms of the head and socket, the tooth is greatly reinforced, for the head seats snugly in the socket as does the tongue 18 of the tooth in the pocket 19 of the head. Furthermore any force exerted upon the tooth to tilt the latter in the plane of the backing, will be effectively resisted by the co-action of the spaced apart walls 11 and v 12 of the head with the walls of the socket and of the tongue, thus producing an artificial tooth of great strength and rigidity, which is positively insured against displacement from the backing in the course of use.

Reference will now be had to Figures .5

to 8 inclusive, wherein I have shown a mount ing which is employed in cases requiring con cealment of the mounting as is not provided by the form of the latter previously described. This second embodiment of my invention comprises a backing B in the shape of a relatively narrow metallic plate having formed integral therewith to project from one side thereof a head H identical in construction to the head I-I previously described in detail. An artificial tooth lb is provided with a recess 20 the width of which is substantially equal to that of the backing B. The recess 20 eiitends inwardly of the tooth from its lingual side 16? and base side 21 and its. bot tom' or end wall 22 is inclined towards the incisal edge'in incisors, and towards the buccal cusp in molars and bicuspids, whereas its buccal wall 23 and side walls 24 are vertically disposed. s

From the buccal wall 23 of the recess, eX- tends inwardly of the tooth a sockets com pleinentary to the head H and disposed in the same relationship to the tooth as the socket S bears to the tooth 15.

In practice, a thin sheet of metal 25 is soldered to the backing B and is of sufficient width to permit of its being bent into U-forin as shown in Figure 7 to provide lateral extensions 26'which line the side walls24 of the recess 20 when the tooth isapplied to the backing as shown in this figure. Cement is supplied to the socket S and t0 the walls of the recess and the tooth is then applied to the backing B. VVhen the cement has set, the recess 20 is filled with solder to form a post 27 by means of which the tooth can be secured to a plate or bridge.

It willbe manifestthat in both forms of my invention, the co-acting head and socket of the backing and tooth respectively, function to fixedly secure the toothto the backing against displacement under the stresses to which the tooth is subjected when in use, and that myinvention is equally well adapted for an artificial tooth wherein the metallic backing forms the lingual side of the tooth, or one wherein the tooth has porcelain sides and incisal or cusp portions.

Although I have herein shown and described only two forms of mounting for artificial teethembodying my invention, it is 'to be understood that various changes and modifications may be made therein without departing from the spirit of the invention and the spirit and scope of the appended claim.

I claim:

A mounting comprising a backing having a head of U form projecting at an acute angle I from one side thereof and providing spaced apart parallel walls and a curved connecting wall co-acting therewith and with the backing to form a pocket, and a tooth having a socket complementary to the head to provide a tongue in the socket entering the pocket of the head when the latter is received in the socket, the socket extending from the lingual side of the tooth andinclining labio-occlusally from the lingual side and disposing the spaced'apart parallel walls of the head vertically with their free ends in the incisal portion of incisors and in the buccal portion of molars and bicuspids.

WII LIAM r. RODIN. 

